Template:Structural properties of major testosterone esters
| Androgen | Structure | Ester | Relative mol. weight |
Relative T contentb |
Durationc | ||||
|---|---|---|---|---|---|---|---|---|---|
| Position | Moiety | Type | Lengtha | Rank | Group | ||||
| Testosterone |  |
– | – | – | – | 1.00 | 1.00 | 11 | Short |
| Testosterone propionate |  |
C17β | Propanoic acid | Straight-chain fatty acid | 3 | 1.19 | 0.84 | 10 | Short |
| Testosterone isobutyrate |  |
C17β | Isobutyric acid | Aromatic fatty acid | – (~3) | 1.24 | 0.80 | 9 | Moderate |
| Testosterone cypionate |  |
C17β | Cyclopentylpropanoic acid | Aromatic fatty acid | – (~6) | 1.43 | 0.70 | 8 | Moderate |
| Testosterone phenylpropionate |  |
C17β | Phenylpropanoic acid | Aromatic fatty acid | – (~6) | 1.46 | 0.69 | 7 | Moderate |
| Testosterone isocaproate |  |
C17β | Isohexanoic acid | Branched-chain fatty acid | – (~5) | 1.34 | 0.75 | 6 | Moderate |
| Testosterone caproate |  |
C17β | Hexanoic acid | Straight-chain fatty acid | 6 | 1.35 | 0.75 | 5 | Moderate |
| Testosterone enanthate |  |
C17β | Heptanoic acid | Straight-chain fatty acid | 7 | 1.39 | 0.72 | 4 | Moderate |
| Testosterone decanoate |  |
C17β | Decanoic acid | Straight-chain fatty acid | 10 | 1.53 | 0.65 | 3 | Long |
| Testosterone undecanoate |  |
C17β | Undecanoic acid | Straight-chain fatty acid | 11 | 1.58 | 0.63 | 2 | Long |
| Testosterone buciclated |  |
C17β | Bucyclic acide | Aromatic carboxylic acid | – (~9) | 1.58 | 0.63 | 1 | Long |
| Footnotes: a = Length of ester in carbon atoms for straight-chain fatty acids or approximate length of ester in carbon atoms for aromatic fatty acids. b = Relative testosterone content by weight (i.e., relative androgenic/anabolic potency). c = Duration by intramuscular or subcutaneous injection in oil solution (except TiB and TB, which are in aqueous suspension). d = Never marketed. e = Bucyclic acid = trans-4-Butylcyclohexane-1-carboxylic acid. Sources: See individual articles. | |||||||||